Ladle.



Nu. 694,937. Patantejd Mar. ll, I902.

, F. BALDT.

LADLE.

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UNITED STATES PATENT OFFICE.

FREDERICK BALDT, OF CHESTER, PENNSYLVANIA.

LADLE.

SPECIFIGATION forming part of Letters Patent No. 694,937, dated March 11, 1902.

Original application filed July 19, 1900, Serial No. 23,961. Divided andthis application filed September 14, 1900. fierial To all whom it mayconcern:

Be it known that I, FREDERICK BALDT, a citizen of the United States,residing at Chester, in the county of Delaware, State of Pennsylvania,have invented a new and useful Improvement in Ladles, which improvementis fully set forth in the following specification and accompanyingdrawing.

My invention consists of an improvement in ladles wherein the bodyportion is formed or constructed of rolled metal and having a bottomformed 01": cast metal, which is suitably secured to the said bodyportion, this application being a division of an application forimprovement in ladles filed July 19, 1900, Serial No. 23,961.

The figure represents an elevation of a ladle embodying my inventionwith a portion broken away.

Similar letters of reference indicate corresponding parts in the figure.

. Ladles for pouring molten metal have heretofore, as far as I aminformed, been, constructed of rolled metal throughoutthat is to say,both the body portion and bottom have been constructed of rolledmetal-lined, of course, with the usual fire brick or clay. Seriousdifliculties, however, have been encountered in the use of these ladles,resulting not only in loss of time, but in the loss in some cases of anentire pouring of metal, and,furthermore, have entailed great expense.This is due to the warping, bulging, or cracking of the rolled-metalbottom, occasioned by-the intense heat andalso the weight of the moltenmetal. When the bottom thus warps, bulges, or cracks, it displaces therefractory lining of the ladle, and thus allows the molten metal to comein contact with the bottom, and in some cases the bottom is burned out,which will cause the loss of the contents of the ladle. Thisnecessitates the replacing of the bottom, entailing an expense incausing a loss of time and labor. To overcome these difficulties, I havedevised a ladle the bottom of which will not warp, crack, or bulge andhave in practice used such" a ladle for some time with entirelysatisfactory results. In the drawing I have shown a ladle A constructedin accordance with my invention, the body portion B of which is formedof rolled (No model.)

metal, while the removable bottom 0 is constructed of cast metalsuitably secured to the body portion-for instance, by bolts D. I

have found in practice that the properties of this cast metal bottom aresuch that it successfully obviates the objections to the rolled" "Itherefore gain an advantage in constructing the bottom of cast metal,since the life of the ladle is prolonged, the operation improved, whilea new bottom can be quickly inserted if for any cause this should benecessary. As thebottom is where the greatest heat occurs and is in partsubjected to the greatest strain, it is necessary to make the sameexceedingly strong and durable, combined with the approved weight andproperty of resisting any tendency to warp or bulge, and thesecombined'properties can be secured by the present construction, therebyeffiectually preventing the bottom from sagging or otherwise bulging orcracking, and thus mak ing the same unfit for use. 7

Having thus described my inventiom'what I claim as new, and desire tosecure by Letters Patent, is e e 1. In a ladle, a body portion formed ofrolled metal, a bottom formed of cast metal, and means for securing thesaid body portion and bottom together.

2. In a ladle, a bod y portion formed of rolled metal, in combinationwith a bottom formed of cast metal suitably secured to said bodyportion.

3. A ladle consisting of a body portion formed of rolled metal, and abottom of cast metal suitably secured to said body portion andpossessing the property of greater resistance to warping, bulging,cracking or sagging when subjected to the heat and weight of the metalwithin the ladle than is possessed by the rolled metal of the bodyportion.

FREDK. BALDT.

